exile vs expulsion

exile

noun
  • The state of being banished from one's home or country. 

  • Someone who is banished from their home or country. 

verb
  • To send (someone or something) into exile. 

expulsion

noun
  • The act of expelling or the state of being expelled. 

How often have the words exile and expulsion occurred in a corpus of books? (source: Google Ngram Viewer )